This article discusses the use of propensity scoring in experimental program evaluations to estimate impacts for subgroups defined by program features and participants' program experiences. The authors discuss estimation issues and provide specification tests. They also discuss the use of an overlooked data collection design--obtaining predictions…

Interactive Research and Development on Teaching (IR&DT) is an alternative Research and Development (R&D) strategy that probes the questions, problems, and concerns of classroom teachers in a nonlinear manner. Each of the primary functions of traditional R&D--research, development, dissemination, and implementation--are performed…

An experimenting society is one that vigorously tries out proposed solutions to recurrent problems and then tries other alternatives if evaluation shows that previous efforts are ineffective or harmful. Methods that social scientists could use if the experimenting society becomes a reality are explored. (SLD)

The program of systematic evaluation of variables associated with visual learning was initiated in 1965 to investigate the impact of variables linked to effective, efficient use of instructional visual materials. A prototype experimental package, containing a specific unit of cognitive content, learner achievement objectives, four individual…

The methodology used during the 2-year project involving 14 case studies of rural education improvement programs consisted of 4 sets of overlapping activities: (1) gearing up and completing the study design; (2) site visits, data collection, and case study write ups; (3) data analysis; and (4) technical assistance. The gearing up period was…